Steam-pump.



B. 0. GAGE.

STEAM PUMR.

1221110111011 r1121) ram, 1911.

COLUMBIA PLANOGRAPH cm, WASHINGTON. D. c.

Patented'Aug. 1,1911.

4 SHEETBSHEET 1,

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STEAM PUMP.

APPLICATION FILED 1mm, 1911.

999,642. r Patented Aug. 1-, 1911.

4 SHEETS-SHEET 2.

v IDuemU'or-g COLUMBIA PLANODRAPH cm. WASHINGTON. D. C.

12.. 0. GAGE.

STEAM PUMP.

A1PLIOATION FILED IElhl, 1911. 999,642. Patented Aug. 1, 1911.

4 SHEETS-SHEET 3.

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B. 0. GAGE.

STEAM PUMP.

APPLICATION FILED r2111, 1911.

Patented Aug. 1, 1911.

4 SHEETS-SHEET 4.

INVENTOR.

WITNESSES:

EMA M ATTORNEY.

UNITED STATES PATENT OFFICE.

BURT O. GAGE, 0F WARREN, MASSACHUSETTS, ASSIGNOR TO WARREN STEAM PUMPCOMPANY, OF WARREN, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

STEAM-PUMP.

To all whom it may concern:

Be it known that I, BURT O. GAGE, a citizen of the United States,residing in Warren, county of Worcester, and State of Massachusetts,have invented an Improvement in Steam-Pumps, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like letters on the drawings representing like parts.

This invention relates to steam pumps and more particularly to a novelconstruction and arrangement of valve mechanism, with which shocks andblows to the operating parts may be avoided and a smooth and noiselesslyrunning pump obtained.

The invention further has for its object to obtain the results desiredwith simple and eflicient mechanism as will be described.

These and other features of this invention will be pointed out in theclaims at the end of this specification.

Figure 1 is a section and elevation of one form of pumping engineembodying this invention. Fig. 2, a like view with the parts in adifierent position. Figs. 3 and 1, details in section showing the partsin other positions. Fig. 5, a vertical section on the line 55, Fig. 1.Fig. 6, a detail in horizontal section on the line 6-6, Fig. 1. Fig. 7,a like section on the line 77, Fig. 2, and Figs. 8, 9 and 10,diagrammatic Views to be referred to.

Referring to the drawings, a represents the cylinder of a pump of anysuitable or known construction, and b the piston therein, whose rod 0 isdirectly connected with the piston d of a steam cylinder 6 also of usualor known construction and provided with the steam ports f, g, leadingfrom near the ends of the cylinder e toward the center thereof and tothe seat It for a main valve 2', which is of the well-known D-form andcontrols communication of the ports f, g, with the exhaust port 7'.

The main valve 2' is located in a valve casing or chest 10, which issuitably secured steam-tight to the main steam cylinder e, and supportsa cylinder 12 .containing a piston 13, which is connected intermediateof its ends with the stem 14 of the main valve 2'. The valve chest 10 isin open communication with the steam supply 15 as herein shown by meansof a port or passage 16. The valve chest 10 contains within itSpecification of Letters Patent.

Application filed February 1, 1911.

Patented Aug. 1, 1911.

Serial No. 605,986.

The auxiliary valve carrier 18 is supported as herein shown by rods 20,21, which are screwed into the opposite ends of the said carrier andlocked by the nuts 23, 24:, said rods extending through the opposite endwalls of the valve chest 10. One of the rods as 21 is connected with thepiston rod 0 to be moved thereby as will be de scribed, and in thepresent instance, one form of connection is shown, it comprising a rod25 pivotally connected at 26 with the rod 21 and loosely extendedthrough a hole .in the block or ball 27 pivotally connected with theupper end 'of a lever 28, which is pivoted at 29 to a stationary part 30of the framework of the pump, and has its lower end joined by a link 31wit-h a cross head 32 fast on the piston rod 0. The block 27 constitutesa sliding tappet device and is located between nuts or tappets 33, 34,in engagement with a threaded portion of the rod 25 and secured in theiradjusted positions by the set screws 80. The tappets 33, 34, arearranged with relation to the ball or block 27 so as to enable the mainpiston rod 0 to mechanically move the auxiliary valve 17 and its carrier18, and through the latter effect movement of the main valve 2' and thepiston 13, and to permit the piston rod 0 to be moved for a portion ofthe stroke of the steam piston cl without moving the auxiliary valve andits carrier.

The auxiliary valve controls the inlet and exhaust of steam into andfrom the opposite ends of the cylinder 12, which is provided at each endwith separate inlet and exhaust ports, the steam inlet ports 36, 37,being located in close proximity to the end walls of the cylinder 12 andconnected by passages 38, 39, with ports 40, 41, arranged in line witheach other on one side of the longitudinal center of the seat/12 for theauxiliary valve 17. The exhaust ports 43, 44

are located away from the end walls of the cylinder 12 and are connectedby passages 45, 46, with ports 47, 48, in the seat 42 for the auxiliaryvalve on the opposite side of the longitudinal center of said seat andare nearer the exhaust port 49 in said seat than the ports 40, 41.

' Byproviding the cylinder 12 with separate exhaust ports 43, 44, andlocating them away from the end walls of the cylinder 12, steam cushionsare formed in closed chambers at the ends of the cylinder 12, when theexhaustports 48, 44 are covered by the pis ton 18, whereby the saidpiston is cushioned on its movement in opposite directions by the steamconfined in said closed chambers, which avoids contact of the saidpiston with the end walls or heads of the cylinder 12 and thereby avoidsa hammer blow and the noise thereof from this source.

The steam outlet or exhaust ports 47, 48 are designed to be connected bythe auxiliary valve 17 with the exhaust port 49 in the seat of theauxiliary valve, which exhaust port is connected by a passage 50 (seeFig. with the exhaust port 7' of the main steam cylinder 6.

The arrangement of the steam inlet ports 40, 41 and ot the exhaust ports47, 48, 49, in the seat of the auxiliary valve is represented in Figs.6, 7 and 8, and by reference thereto, it will be seen that the exhaustports 47, 48, are located between the steam inlet ports 40, 41, so thatwhen the auxiliary valve 17 is moved so as to cover one of the exhaustports as 47, (see Figs. 6 and 8) and to connect the exhaust ports 48,49, the steam inlet port 40 leading to one end of the cylinder 12 willbe open for the admission of live steam to one end of the said cylinder,and the steam inlet port 41 leading to the other end of the cylinder 12will be closed, with the result that the piston 13 becomes unbalancedand will be moved by the steam admitted to one end of the cylinder 12through the port 40, so as to move the piston 13 and with it the mainvalve 2' to complete the movement of the latter in one direction so asto effect movement of the piston (Z of the steam cyl inder c in thereverse direction.

The auxiliary valve 17 is mechanically actuated from the piston rod 0 ofthe pump and during a portion of its movement in opposite directions,its carrier 18 engages the stem 14 of the main valve 2' and mechanicallymoves the latter so as to close the steam inlet port leading to one endof the steam cylinder and the exhaust port leading to the other end ofthe steam cylinder, before the piston in the steam cylinder 6 reachesthe end of its stroke, whereby the said steam piston is cushioned bysteam between it and the end of its cylinder and sudden stopping of thesteam piston is prevented, thereby avoiding a water hammer in the pump,and consequently avoiding noise from this source and e abling the steampiston to be easily and smoothly stopped and then started in theopposite direction or on .its return stroke by the main valve 71 beingmoved by the piston 13, which latter during the greater portion of themovement of the main valve is balanced by steam adn'iitted into theopposite ends of the cylinder 12, represented in Figs. 3 and 9.

The tappets 33, 84, are adjusted on the rod with relation to the tappetdevice or block 27, so as to permit the desired movements of the mainvalve, its actuating piston and the auxiliary valve to be etl'ected,whereby the main valve is mechanically operated by the main piston rod 0so to be moved thereby for the greater portion of its stroke or movementand substantially close the ports in the main valve seat, and wherebythe movement of the main valve is completed by unbalancing its actuatingpiston.

The operation of the pump may be briefly described as follows :-Assumethe parts in the position shown in Fig. 1. In this case, the piston (Zhas reached the end of its stroke in the direction indicated by thearrow 60 and is beginning its return stroke. At such time, live steam isbeing admitted behind the piston (Z through the port f and auxiliaryport 61, which moves the piston in the di rection indicated by the arrow62. The steam in front of the piston is forced out through the port g,which is connected by the main valve 2' with the main exhaust port Theauxiliary valve in the position shown in Figs. 1 and 6, closes theexhaust port 47 and uncovers the inlet port 40, closes the steam inlet41 and connects the exhaust port 48 with the main exhaust by the port 49and passage 50. On the movement of the main piston cl for substantiallyone half of its stroke in the direction of arrow 62 (see Fig. 2), theauxiliary valve is not moved, but at or about the time the main piston(Z begins the second half of its stroke in the direction of the arrow62, the block 27 engages the tappet 33 and moves the auxiliary valve inthe direction of the arrow 60 to cover the exhaust port 48 and uncoverthe inlet port 41, which admits steam to the cylinder 12 through theport 37 to balance the piston 13, which is then moved with the mainvalve 2' in the direction of the arrow 60 by the auxiliary valve carrierengaging the stem 14 of the main valve, (see Fig. 3), until the mainpiston cl has reached the end of its stroke in the direction of thearrow 62, at which time the main valve 2' has been moved so as to closethe exhaust port g, and nearly and passage 50, thereby unbalancing thepiston 13, which is moved substantially in an instant toward the end ofthe cylinder in the direction of the arrow 60 and carries with it themain valve so as to complete the movement of the latter to connect theport with the exhaust port and to open the port 9 to the valve chest 10(see Fig. 4), and thereby admit live steam into the main cylinder 6through the port 9 to move the piston (Z in the direction of the arrow60. On the movement of the piston (Z in the direction of the arrow 60,the action of the main and auxiliary valves is the reversed so as toform steam cushions at the right hand end of the steam cylinder 6 and atthe left hand end of the cylinder 12 (viewing Fig. 1). It will thus beseen that the auxiliary valve, which, as above described, may be securedto or form partof its carrier is mechanically connected with the pistonrod 0 of the steam piston (Z, so that movement of the latter is impartedto the auxiliary valve and its carrier, which cooperate with the stem 1aof the main valve to mechanically move the latter and its attachedpiston 13 for substantially the first half of their movement in onedirection while the piston 13 is balanced, and to permit the main valveto be further moved in the same direction independently of the auxiliaryvalve by the unbalancing of the piston 13.

The ports 36, 37, 43, 44 in the cylinder 12 are located in the bottom ofthe cylinder and by reference to Fig. 5, it will be seen that anymoisture in the cylinder 12 can readily drain by gravity to the mainexhaust, thereby freeing the cylinder 12 of water of condensation andfacilitating the easy running of the pump. It will thus be observed thata steam cushion is provided in the main steam cylinder 6 for the piston(Z as the latter reaches the end of its stroke in opposite directions,and that a steam cushion is provided in the cylinder 12 for the piston13 therein as the latter reaches the end of its stroke in oppositedirections, and as a result a noiseless and smooth running pump isobtained. It will further be observed that by interposing the auxiliaryvalve between the cylinder 12 and the main steam cylinder, the pump issimplified and its cost reduced, inasmuch as only a single connection isneeded between the auxiliary valve and the piston rod 0 of the pump.

I have herein shown one embodiment of the invention which I may prefer,but I do not desire to limit the invention to the particularconstruction and arrangement herein shown.

Claims.

1. The combination with the main valve of a steam pump, of a pistonconnected with said main valve to move it, a cylinder in which saidpiston is located having separate inlet and exhaust ports leading to theopposite ends of said cylinder, said exhaust ports being located agreater distance from the ends of said cylinder than said inlet ports,an auxiliary valve interposed between said cylinder and the seat for thesaid main valve and controlling said inlet and exhaust ports, a carrierfor said auxiliary valve having an opening through which the stem of themain valve is extended, and means to connect said carrier with thepiston rod of the steam pump, substantially as described.

2. The combination with the main valve of a steam pump, of a pistonconnected with said main valve to move it, a cylinder in which saidpiston is located, a valve chest for said' main valve interposed betweensaid cylinder and the seat for the said main valve, an auxiliary valvelocated in said valve chest and cooperating with said main valve tomechanically move the latter and to permit the main valve to be moved byits piston independently of said auxiliary valve, and cooperating with avalve seat having ports connecting said valve seat chest with saidcylinder, and means to connect said auxilary valve with the piston rodof said pump, substantially as described.

3. The combination with the main valve of a steam pump, of a pistonconnected with said main valve to move it, a cylinder in which saidpiston is located, a valve chest for said main valve interposed betweensaid cylinder and the seat for the said main valve, an auxiliary valvelocated in said valve chest and cooperating with said main valve tomechanically move the latter and to permit the main valve to be moved byits piston independently of said auxiliary valve and cooperating with avalve seat having ports connecting said valve chest with said cylinder,and means to operate said auxiliary valve, substantially as described.

4. The combination with the main valve of a steam pump, of a pistonconnected with said main valve to move it, a cylinder in which saidpiston is located, a valve chest for said main valve interposed betweensaid cylinder and the steam cylinder of said pump, ports connecting saidvalve chest with the opposite ends of the said cylinder, an auxiliaryvalve in said valve chest cooperating with said ports, a carrier forsaid auxiliary valve having an opening through which the stem of themain valve is loosely extended to permit the main valve to be moved bysaid carrier and independently of said carrier, and means to connectsaid carrier with the piston rod of the pump, substantially asdescribed.

5. The combination with the main valve of a steam pump, of a pistonconnected with said main valve to move it, a cylinder in which saidpiston is located, a valve chest provided with steam inlet ports leadingto the opposite ends of said cylinder ,and with separate exhaust portsleading to the opposite ends of the cylinder and terminating at agreater distance from the end walls of said cylinder than said inletports, an auxiliary valve in said valve chest between the main valve andits actuating piston and controlling said ports and cooperating with themain valve to mechanically move the latter for a portion of its movementin one direction and to permit the main valve to be moved by its pistonindependently of the auxiliary valve for another portion of its movementin said direction, and means to operate said auxiliary valve,substantially as described.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing witnesses.

BURT O. GAGE. Witnesses:

B. R. CLARKE, FRANK F. PHINNEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. G.

